./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/goblint-regression/09-regions_24-evilcollapse_nr.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/goblint-regression/09-regions_24-evilcollapse_nr.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 085e9170c725dbfce47ad23ff96af1e2e4188372955794675158fde45968fe8a --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 06:15:12,291 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 06:15:12,292 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 06:15:12,317 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 06:15:12,317 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 06:15:12,318 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 06:15:12,319 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 06:15:12,320 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 06:15:12,321 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 06:15:12,322 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 06:15:12,322 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 06:15:12,323 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 06:15:12,323 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 06:15:12,324 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 06:15:12,325 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 06:15:12,326 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 06:15:12,326 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 06:15:12,327 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 06:15:12,328 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 06:15:12,332 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 06:15:12,333 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 06:15:12,334 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 06:15:12,335 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 06:15:12,336 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 06:15:12,339 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 06:15:12,345 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 06:15:12,345 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 06:15:12,346 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 06:15:12,346 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 06:15:12,347 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 06:15:12,347 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 06:15:12,348 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 06:15:12,348 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 06:15:12,354 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 06:15:12,354 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 06:15:12,355 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 06:15:12,355 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 06:15:12,355 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 06:15:12,356 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 06:15:12,356 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 06:15:12,357 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 06:15:12,358 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-09-01 06:15:12,385 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 06:15:12,386 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 06:15:12,387 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 06:15:12,387 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 06:15:12,388 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 06:15:12,388 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 06:15:12,389 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 06:15:12,389 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 06:15:12,389 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 06:15:12,390 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 06:15:12,390 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 06:15:12,390 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 06:15:12,390 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 06:15:12,391 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 06:15:12,391 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 06:15:12,391 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 06:15:12,391 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 06:15:12,391 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 06:15:12,391 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-09-01 06:15:12,391 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 06:15:12,392 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 06:15:12,392 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 06:15:12,392 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 06:15:12,392 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 06:15:12,392 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 06:15:12,392 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 06:15:12,392 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 06:15:12,393 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 06:15:12,393 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 06:15:12,393 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 06:15:12,393 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 06:15:12,393 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 06:15:12,393 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 06:15:12,394 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 06:15:12,394 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 06:15:12,394 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 06:15:12,394 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 06:15:12,394 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 085e9170c725dbfce47ad23ff96af1e2e4188372955794675158fde45968fe8a Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 06:15:12,655 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 06:15:12,679 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 06:15:12,681 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 06:15:12,682 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 06:15:12,682 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 06:15:12,683 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/09-regions_24-evilcollapse_nr.i [2023-09-01 06:15:13,672 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 06:15:13,887 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 06:15:13,887 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/09-regions_24-evilcollapse_nr.i [2023-09-01 06:15:13,915 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5feb28141/4688d2e755be4ee9a72359dfcacb6360/FLAG608858c5f [2023-09-01 06:15:13,929 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5feb28141/4688d2e755be4ee9a72359dfcacb6360 [2023-09-01 06:15:13,931 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 06:15:13,932 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 06:15:13,933 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 06:15:13,933 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 06:15:13,950 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 06:15:13,951 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 06:15:13" (1/1) ... [2023-09-01 06:15:13,952 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ffbeb2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:15:13, skipping insertion in model container [2023-09-01 06:15:13,952 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 06:15:13" (1/1) ... [2023-09-01 06:15:13,957 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 06:15:13,997 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 06:15:14,303 WARN L1562 CHandler]: Possible shadowing of function new [2023-09-01 06:15:14,304 WARN L1562 CHandler]: Possible shadowing of function new [2023-09-01 06:15:14,305 WARN L1562 CHandler]: Possible shadowing of function new [2023-09-01 06:15:14,305 WARN L1562 CHandler]: Possible shadowing of function new [2023-09-01 06:15:14,333 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 06:15:14,347 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 06:15:14,385 WARN L1562 CHandler]: Possible shadowing of function new [2023-09-01 06:15:14,385 WARN L1562 CHandler]: Possible shadowing of function new [2023-09-01 06:15:14,385 WARN L1562 CHandler]: Possible shadowing of function new [2023-09-01 06:15:14,386 WARN L1562 CHandler]: Possible shadowing of function new [2023-09-01 06:15:14,394 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 06:15:14,451 INFO L208 MainTranslator]: Completed translation [2023-09-01 06:15:14,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:15:14 WrapperNode [2023-09-01 06:15:14,452 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 06:15:14,453 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 06:15:14,453 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 06:15:14,454 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 06:15:14,458 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:15:14" (1/1) ... [2023-09-01 06:15:14,488 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:15:14" (1/1) ... [2023-09-01 06:15:14,519 INFO L138 Inliner]: procedures = 273, calls = 38, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 170 [2023-09-01 06:15:14,519 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 06:15:14,520 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 06:15:14,520 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 06:15:14,521 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 06:15:14,526 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:15:14" (1/1) ... [2023-09-01 06:15:14,527 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:15:14" (1/1) ... [2023-09-01 06:15:14,535 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:15:14" (1/1) ... [2023-09-01 06:15:14,537 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:15:14" (1/1) ... [2023-09-01 06:15:14,544 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:15:14" (1/1) ... [2023-09-01 06:15:14,556 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:15:14" (1/1) ... [2023-09-01 06:15:14,558 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:15:14" (1/1) ... [2023-09-01 06:15:14,562 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:15:14" (1/1) ... [2023-09-01 06:15:14,565 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 06:15:14,565 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 06:15:14,566 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 06:15:14,566 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 06:15:14,566 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:15:14" (1/1) ... [2023-09-01 06:15:14,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 06:15:14,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 06:15:14,611 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-09-01 06:15:14,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-09-01 06:15:14,641 INFO L130 BoogieDeclarations]: Found specification of procedure f [2023-09-01 06:15:14,641 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2023-09-01 06:15:14,641 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 06:15:14,641 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-09-01 06:15:14,641 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 06:15:14,641 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 06:15:14,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 06:15:14,642 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-09-01 06:15:14,642 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-09-01 06:15:14,642 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 06:15:14,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-09-01 06:15:14,642 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 06:15:14,643 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 06:15:14,644 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 06:15:14,772 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 06:15:14,773 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 06:15:15,072 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 06:15:15,078 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 06:15:15,078 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-09-01 06:15:15,079 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 06:15:15 BoogieIcfgContainer [2023-09-01 06:15:15,079 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 06:15:15,081 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 06:15:15,081 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 06:15:15,083 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 06:15:15,083 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 06:15:13" (1/3) ... [2023-09-01 06:15:15,083 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27eb5b4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 06:15:15, skipping insertion in model container [2023-09-01 06:15:15,083 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:15:14" (2/3) ... [2023-09-01 06:15:15,084 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27eb5b4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 06:15:15, skipping insertion in model container [2023-09-01 06:15:15,084 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 06:15:15" (3/3) ... [2023-09-01 06:15:15,084 INFO L112 eAbstractionObserver]: Analyzing ICFG 09-regions_24-evilcollapse_nr.i [2023-09-01 06:15:15,089 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 06:15:15,095 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 06:15:15,095 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-09-01 06:15:15,095 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 06:15:15,178 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 06:15:15,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 230 places, 240 transitions, 490 flow [2023-09-01 06:15:15,293 INFO L130 PetriNetUnfolder]: 17/238 cut-off events. [2023-09-01 06:15:15,294 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 06:15:15,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 245 conditions, 238 events. 17/238 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 538 event pairs, 0 based on Foata normal form. 0/207 useless extension candidates. Maximal degree in co-relation 181. Up to 2 conditions per place. [2023-09-01 06:15:15,298 INFO L82 GeneralOperation]: Start removeDead. Operand has 230 places, 240 transitions, 490 flow [2023-09-01 06:15:15,305 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 228 places, 238 transitions, 482 flow [2023-09-01 06:15:15,307 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:15:15,313 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 228 places, 238 transitions, 482 flow [2023-09-01 06:15:15,315 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 228 places, 238 transitions, 482 flow [2023-09-01 06:15:15,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 228 places, 238 transitions, 482 flow [2023-09-01 06:15:15,343 INFO L130 PetriNetUnfolder]: 17/238 cut-off events. [2023-09-01 06:15:15,344 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 06:15:15,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 245 conditions, 238 events. 17/238 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 539 event pairs, 0 based on Foata normal form. 0/207 useless extension candidates. Maximal degree in co-relation 181. Up to 2 conditions per place. [2023-09-01 06:15:15,348 INFO L119 LiptonReduction]: Number of co-enabled transitions 7154 [2023-09-01 06:15:46,364 WARN L222 SmtUtils]: Spent 12.44s on a formula simplification. DAG size of input: 187 DAG size of output: 185 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-09-01 06:15:52,367 WARN L222 SmtUtils]: Spent 6.00s on a formula simplification that was a NOOP. DAG size: 177 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-09-01 06:16:04,974 WARN L222 SmtUtils]: Spent 12.60s on a formula simplification. DAG size of input: 187 DAG size of output: 185 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-09-01 06:16:10,480 WARN L222 SmtUtils]: Spent 5.50s on a formula simplification that was a NOOP. DAG size: 177 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-09-01 06:16:27,469 WARN L222 SmtUtils]: Spent 16.99s on a formula simplification. DAG size of input: 188 DAG size of output: 187 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-09-01 06:16:34,154 WARN L222 SmtUtils]: Spent 6.68s on a formula simplification that was a NOOP. DAG size: 179 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-09-01 06:16:47,842 WARN L222 SmtUtils]: Spent 13.69s on a formula simplification. DAG size of input: 190 DAG size of output: 188 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-09-01 06:16:54,537 WARN L222 SmtUtils]: Spent 6.69s on a formula simplification that was a NOOP. DAG size: 180 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-09-01 06:16:54,604 INFO L134 LiptonReduction]: Checked pairs total: 7233 [2023-09-01 06:16:54,605 INFO L136 LiptonReduction]: Total number of compositions: 261 [2023-09-01 06:16:54,622 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 06:16:54,626 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@8a7d3c7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:16:54,626 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2023-09-01 06:16:54,632 INFO L130 PetriNetUnfolder]: 2/5 cut-off events. [2023-09-01 06:16:54,632 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 06:16:54,632 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:16:54,633 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 06:16:54,633 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-09-01 06:16:54,637 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:16:54,637 INFO L85 PathProgramCache]: Analyzing trace with hash 803560, now seen corresponding path program 1 times [2023-09-01 06:16:54,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:16:54,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077385895] [2023-09-01 06:16:54,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:16:54,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:16:54,758 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-09-01 06:16:54,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1513827538] [2023-09-01 06:16:54,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:16:54,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:16:54,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 06:16:54,762 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 06:16:54,765 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-09-01 06:16:54,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:16:54,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 3 conjunts are in the unsatisfiable core [2023-09-01 06:16:54,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 06:16:54,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:16:54,927 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 06:16:54,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:16:54,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077385895] [2023-09-01 06:16:54,928 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-09-01 06:16:54,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1513827538] [2023-09-01 06:16:54,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1513827538] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 06:16:54,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 06:16:54,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 06:16:54,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192609371] [2023-09-01 06:16:54,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 06:16:54,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 06:16:54,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:16:54,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 06:16:54,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 06:16:54,984 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 501 [2023-09-01 06:16:54,988 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 39 transitions, 84 flow. Second operand has 3 states, 3 states have (on average 223.0) internal successors, (669), 3 states have internal predecessors, (669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:16:54,988 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:16:54,988 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 501 [2023-09-01 06:16:54,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:16:55,345 INFO L130 PetriNetUnfolder]: 436/710 cut-off events. [2023-09-01 06:16:55,345 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-09-01 06:16:55,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1448 conditions, 710 events. 436/710 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2790 event pairs, 340 based on Foata normal form. 0/425 useless extension candidates. Maximal degree in co-relation 1412. Up to 706 conditions per place. [2023-09-01 06:16:55,349 INFO L137 encePairwiseOnDemand]: 492/501 looper letters, 39 selfloop transitions, 3 changer transitions 0/42 dead transitions. [2023-09-01 06:16:55,349 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 42 transitions, 174 flow [2023-09-01 06:16:55,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 06:16:55,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 06:16:55,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 715 transitions. [2023-09-01 06:16:55,360 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47571523619427813 [2023-09-01 06:16:55,361 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 715 transitions. [2023-09-01 06:16:55,361 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 715 transitions. [2023-09-01 06:16:55,363 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:16:55,365 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 715 transitions. [2023-09-01 06:16:55,368 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 238.33333333333334) internal successors, (715), 3 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:16:55,373 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 501.0) internal successors, (2004), 4 states have internal predecessors, (2004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:16:55,374 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 501.0) internal successors, (2004), 4 states have internal predecessors, (2004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:16:55,375 INFO L175 Difference]: Start difference. First operand has 40 places, 39 transitions, 84 flow. Second operand 3 states and 715 transitions. [2023-09-01 06:16:55,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 42 transitions, 174 flow [2023-09-01 06:16:55,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 42 transitions, 172 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 06:16:55,379 INFO L231 Difference]: Finished difference. Result has 41 places, 40 transitions, 110 flow [2023-09-01 06:16:55,381 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=501, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=41, PETRI_TRANSITIONS=40} [2023-09-01 06:16:55,384 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 1 predicate places. [2023-09-01 06:16:55,384 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 40 transitions, 110 flow [2023-09-01 06:16:55,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 223.0) internal successors, (669), 3 states have internal predecessors, (669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:16:55,385 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:16:55,385 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 06:16:55,404 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-09-01 06:16:55,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-09-01 06:16:55,591 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-09-01 06:16:55,592 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:16:55,592 INFO L85 PathProgramCache]: Analyzing trace with hash 803757, now seen corresponding path program 1 times [2023-09-01 06:16:55,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:16:55,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326033858] [2023-09-01 06:16:55,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:16:55,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:16:55,644 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-09-01 06:16:55,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [208366334] [2023-09-01 06:16:55,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:16:55,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:16:55,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 06:16:55,648 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 06:16:55,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-09-01 06:16:55,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:16:55,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 3 conjunts are in the unsatisfiable core [2023-09-01 06:16:55,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 06:16:55,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:16:55,779 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 06:16:55,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:16:55,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326033858] [2023-09-01 06:16:55,780 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-09-01 06:16:55,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [208366334] [2023-09-01 06:16:55,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [208366334] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 06:16:55,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 06:16:55,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 06:16:55,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635026875] [2023-09-01 06:16:55,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 06:16:55,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 06:16:55,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:16:55,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 06:16:55,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 06:16:55,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 501 [2023-09-01 06:16:55,836 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 40 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 225.0) internal successors, (675), 3 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:16:55,836 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:16:55,837 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 501 [2023-09-01 06:16:55,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:16:55,976 INFO L130 PetriNetUnfolder]: 435/708 cut-off events. [2023-09-01 06:16:55,977 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 06:16:55,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1454 conditions, 708 events. 435/708 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2776 event pairs, 340 based on Foata normal form. 2/430 useless extension candidates. Maximal degree in co-relation 1438. Up to 707 conditions per place. [2023-09-01 06:16:55,981 INFO L137 encePairwiseOnDemand]: 499/501 looper letters, 38 selfloop transitions, 1 changer transitions 0/39 dead transitions. [2023-09-01 06:16:55,981 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 39 transitions, 180 flow [2023-09-01 06:16:55,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 06:16:55,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 06:16:55,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 711 transitions. [2023-09-01 06:16:55,988 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47305389221556887 [2023-09-01 06:16:55,989 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 711 transitions. [2023-09-01 06:16:55,989 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 711 transitions. [2023-09-01 06:16:55,990 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:16:55,990 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 711 transitions. [2023-09-01 06:16:55,991 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 237.0) internal successors, (711), 3 states have internal predecessors, (711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:16:55,994 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 501.0) internal successors, (2004), 4 states have internal predecessors, (2004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:16:55,995 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 501.0) internal successors, (2004), 4 states have internal predecessors, (2004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:16:55,995 INFO L175 Difference]: Start difference. First operand has 41 places, 40 transitions, 110 flow. Second operand 3 states and 711 transitions. [2023-09-01 06:16:55,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 39 transitions, 180 flow [2023-09-01 06:16:55,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 39 transitions, 176 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 06:16:55,996 INFO L231 Difference]: Finished difference. Result has 41 places, 39 transitions, 103 flow [2023-09-01 06:16:55,996 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=501, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=103, PETRI_PLACES=41, PETRI_TRANSITIONS=39} [2023-09-01 06:16:55,997 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 1 predicate places. [2023-09-01 06:16:55,997 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 39 transitions, 103 flow [2023-09-01 06:16:55,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 225.0) internal successors, (675), 3 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:16:55,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:16:55,998 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2023-09-01 06:16:56,003 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-09-01 06:16:56,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-09-01 06:16:56,203 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-09-01 06:16:56,204 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:16:56,204 INFO L85 PathProgramCache]: Analyzing trace with hash 772382772, now seen corresponding path program 1 times [2023-09-01 06:16:56,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:16:56,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794993548] [2023-09-01 06:16:56,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:16:56,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:16:56,234 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-09-01 06:16:56,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1013323672] [2023-09-01 06:16:56,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:16:56,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:16:56,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 06:16:56,243 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 06:16:56,245 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-09-01 06:16:56,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:16:56,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 2 conjunts are in the unsatisfiable core [2023-09-01 06:16:56,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 06:16:56,351 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:16:56,352 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 06:16:56,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:16:56,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794993548] [2023-09-01 06:16:56,352 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-09-01 06:16:56,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1013323672] [2023-09-01 06:16:56,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1013323672] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 06:16:56,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 06:16:56,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 06:16:56,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369397279] [2023-09-01 06:16:56,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 06:16:56,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 06:16:56,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:16:56,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 06:16:56,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 06:16:56,368 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 501 [2023-09-01 06:16:56,369 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 39 transitions, 103 flow. Second operand has 3 states, 3 states have (on average 225.66666666666666) internal successors, (677), 3 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:16:56,369 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:16:56,369 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 501 [2023-09-01 06:16:56,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:16:56,531 INFO L130 PetriNetUnfolder]: 435/712 cut-off events. [2023-09-01 06:16:56,531 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 06:16:56,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1465 conditions, 712 events. 435/712 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2773 event pairs, 340 based on Foata normal form. 1/432 useless extension candidates. Maximal degree in co-relation 1454. Up to 709 conditions per place. [2023-09-01 06:16:56,534 INFO L137 encePairwiseOnDemand]: 496/501 looper letters, 39 selfloop transitions, 3 changer transitions 0/42 dead transitions. [2023-09-01 06:16:56,534 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 42 transitions, 197 flow [2023-09-01 06:16:56,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 06:16:56,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 06:16:56,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 715 transitions. [2023-09-01 06:16:56,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47571523619427813 [2023-09-01 06:16:56,537 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 715 transitions. [2023-09-01 06:16:56,540 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 715 transitions. [2023-09-01 06:16:56,540 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:16:56,540 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 715 transitions. [2023-09-01 06:16:56,542 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 238.33333333333334) internal successors, (715), 3 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:16:56,543 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 501.0) internal successors, (2004), 4 states have internal predecessors, (2004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:16:56,544 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 501.0) internal successors, (2004), 4 states have internal predecessors, (2004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:16:56,544 INFO L175 Difference]: Start difference. First operand has 41 places, 39 transitions, 103 flow. Second operand 3 states and 715 transitions. [2023-09-01 06:16:56,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 42 transitions, 197 flow [2023-09-01 06:16:56,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 42 transitions, 197 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-09-01 06:16:56,546 INFO L231 Difference]: Finished difference. Result has 44 places, 40 transitions, 124 flow [2023-09-01 06:16:56,546 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=501, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=44, PETRI_TRANSITIONS=40} [2023-09-01 06:16:56,547 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 4 predicate places. [2023-09-01 06:16:56,547 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 40 transitions, 124 flow [2023-09-01 06:16:56,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 225.66666666666666) internal successors, (677), 3 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:16:56,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:16:56,548 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-09-01 06:16:56,556 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-09-01 06:16:56,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:16:56,753 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-09-01 06:16:56,753 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:16:56,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1824312908, now seen corresponding path program 1 times [2023-09-01 06:16:56,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:16:56,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029520582] [2023-09-01 06:16:56,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:16:56,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:16:56,780 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-09-01 06:16:56,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [983590582] [2023-09-01 06:16:56,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:16:56,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:16:56,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 06:16:56,782 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 06:16:56,784 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-09-01 06:16:56,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:16:56,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 3 conjunts are in the unsatisfiable core [2023-09-01 06:16:56,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 06:16:56,950 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:16:56,950 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 06:16:56,965 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:16:56,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:16:56,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029520582] [2023-09-01 06:16:56,965 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-09-01 06:16:56,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [983590582] [2023-09-01 06:16:56,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [983590582] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 06:16:56,966 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-09-01 06:16:56,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-09-01 06:16:56,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536275543] [2023-09-01 06:16:56,966 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-09-01 06:16:56,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 06:16:56,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:16:56,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 06:16:56,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-09-01 06:16:57,021 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 501 [2023-09-01 06:16:57,023 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 40 transitions, 124 flow. Second operand has 6 states, 6 states have (on average 224.5) internal successors, (1347), 6 states have internal predecessors, (1347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:16:57,023 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:16:57,023 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 501 [2023-09-01 06:16:57,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:16:57,336 INFO L130 PetriNetUnfolder]: 437/724 cut-off events. [2023-09-01 06:16:57,336 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-09-01 06:16:57,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1515 conditions, 724 events. 437/724 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2833 event pairs, 340 based on Foata normal form. 6/447 useless extension candidates. Maximal degree in co-relation 1501. Up to 707 conditions per place. [2023-09-01 06:16:57,339 INFO L137 encePairwiseOnDemand]: 494/501 looper letters, 43 selfloop transitions, 8 changer transitions 0/51 dead transitions. [2023-09-01 06:16:57,339 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 51 transitions, 270 flow [2023-09-01 06:16:57,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 06:16:57,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 06:16:57,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1396 transitions. [2023-09-01 06:16:57,343 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4644045242847638 [2023-09-01 06:16:57,343 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1396 transitions. [2023-09-01 06:16:57,343 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1396 transitions. [2023-09-01 06:16:57,344 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:16:57,344 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1396 transitions. [2023-09-01 06:16:57,346 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 232.66666666666666) internal successors, (1396), 6 states have internal predecessors, (1396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:16:57,349 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 501.0) internal successors, (3507), 7 states have internal predecessors, (3507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:16:57,350 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 501.0) internal successors, (3507), 7 states have internal predecessors, (3507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:16:57,351 INFO L175 Difference]: Start difference. First operand has 44 places, 40 transitions, 124 flow. Second operand 6 states and 1396 transitions. [2023-09-01 06:16:57,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 51 transitions, 270 flow [2023-09-01 06:16:57,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 51 transitions, 267 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 06:16:57,353 INFO L231 Difference]: Finished difference. Result has 52 places, 45 transitions, 200 flow [2023-09-01 06:16:57,353 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=501, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=200, PETRI_PLACES=52, PETRI_TRANSITIONS=45} [2023-09-01 06:16:57,354 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 12 predicate places. [2023-09-01 06:16:57,354 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 45 transitions, 200 flow [2023-09-01 06:16:57,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 224.5) internal successors, (1347), 6 states have internal predecessors, (1347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:16:57,355 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:16:57,357 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1] [2023-09-01 06:16:57,364 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-09-01 06:16:57,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:16:57,563 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-09-01 06:16:57,563 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:16:57,563 INFO L85 PathProgramCache]: Analyzing trace with hash 2023882804, now seen corresponding path program 2 times [2023-09-01 06:16:57,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:16:57,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746163673] [2023-09-01 06:16:57,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:16:57,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:16:57,635 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-09-01 06:16:57,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1159975813] [2023-09-01 06:16:57,636 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 06:16:57,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:16:57,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 06:16:57,637 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 06:16:57,639 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-09-01 06:16:57,804 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 06:16:57,805 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 06:16:57,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 3 conjunts are in the unsatisfiable core [2023-09-01 06:16:57,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 06:16:57,815 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-09-01 06:16:57,815 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 06:16:57,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:16:57,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746163673] [2023-09-01 06:16:57,815 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-09-01 06:16:57,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1159975813] [2023-09-01 06:16:57,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1159975813] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 06:16:57,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 06:16:57,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 06:16:57,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149280402] [2023-09-01 06:16:57,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 06:16:57,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 06:16:57,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:16:57,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 06:16:57,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 06:16:57,844 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 501 [2023-09-01 06:16:57,846 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 45 transitions, 200 flow. Second operand has 3 states, 3 states have (on average 224.0) internal successors, (672), 3 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:16:57,846 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:16:57,846 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 501 [2023-09-01 06:16:57,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:16:58,084 INFO L130 PetriNetUnfolder]: 437/722 cut-off events. [2023-09-01 06:16:58,084 INFO L131 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2023-09-01 06:16:58,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1552 conditions, 722 events. 437/722 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2814 event pairs, 340 based on Foata normal form. 1/441 useless extension candidates. Maximal degree in co-relation 1533. Up to 721 conditions per place. [2023-09-01 06:16:58,087 INFO L137 encePairwiseOnDemand]: 497/501 looper letters, 42 selfloop transitions, 3 changer transitions 0/45 dead transitions. [2023-09-01 06:16:58,087 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 45 transitions, 290 flow [2023-09-01 06:16:58,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 06:16:58,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 06:16:58,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 706 transitions. [2023-09-01 06:16:58,089 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4697272122421823 [2023-09-01 06:16:58,089 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 706 transitions. [2023-09-01 06:16:58,090 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 706 transitions. [2023-09-01 06:16:58,090 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:16:58,090 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 706 transitions. [2023-09-01 06:16:58,091 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 235.33333333333334) internal successors, (706), 3 states have internal predecessors, (706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:16:58,093 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 501.0) internal successors, (2004), 4 states have internal predecessors, (2004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:16:58,094 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 501.0) internal successors, (2004), 4 states have internal predecessors, (2004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:16:58,094 INFO L175 Difference]: Start difference. First operand has 52 places, 45 transitions, 200 flow. Second operand 3 states and 706 transitions. [2023-09-01 06:16:58,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 45 transitions, 290 flow [2023-09-01 06:16:58,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 45 transitions, 279 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-09-01 06:16:58,096 INFO L231 Difference]: Finished difference. Result has 54 places, 45 transitions, 202 flow [2023-09-01 06:16:58,096 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=501, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=202, PETRI_PLACES=54, PETRI_TRANSITIONS=45} [2023-09-01 06:16:58,097 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 14 predicate places. [2023-09-01 06:16:58,097 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 45 transitions, 202 flow [2023-09-01 06:16:58,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 224.0) internal successors, (672), 3 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:16:58,097 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:16:58,097 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 2, 1, 1, 1] [2023-09-01 06:16:58,104 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-09-01 06:16:58,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:16:58,305 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-09-01 06:16:58,305 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:16:58,305 INFO L85 PathProgramCache]: Analyzing trace with hash -1684135780, now seen corresponding path program 3 times [2023-09-01 06:16:58,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:16:58,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116936966] [2023-09-01 06:16:58,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:16:58,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:16:58,374 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-09-01 06:16:58,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1001993623] [2023-09-01 06:16:58,374 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-01 06:16:58,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:16:58,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 06:16:58,375 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 06:16:58,408 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-09-01 06:16:58,648 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-09-01 06:16:58,649 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 06:16:58,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 6 conjunts are in the unsatisfiable core [2023-09-01 06:16:58,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 06:16:58,687 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-09-01 06:16:58,688 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 06:16:58,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:16:58,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116936966] [2023-09-01 06:16:58,688 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-09-01 06:16:58,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1001993623] [2023-09-01 06:16:58,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1001993623] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 06:16:58,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 06:16:58,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 06:16:58,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856904779] [2023-09-01 06:16:58,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 06:16:58,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 06:16:58,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:16:58,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 06:16:58,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-09-01 06:16:58,773 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 501 [2023-09-01 06:16:58,774 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 45 transitions, 202 flow. Second operand has 6 states, 6 states have (on average 220.16666666666666) internal successors, (1321), 6 states have internal predecessors, (1321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:16:58,774 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:16:58,774 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 501 [2023-09-01 06:16:58,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:16:59,006 INFO L130 PetriNetUnfolder]: 435/712 cut-off events. [2023-09-01 06:16:59,007 INFO L131 PetriNetUnfolder]: For 39/39 co-relation queries the response was YES. [2023-09-01 06:16:59,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1502 conditions, 712 events. 435/712 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2765 event pairs, 340 based on Foata normal form. 4/440 useless extension candidates. Maximal degree in co-relation 1481. Up to 699 conditions per place. [2023-09-01 06:16:59,009 INFO L137 encePairwiseOnDemand]: 493/501 looper letters, 39 selfloop transitions, 5 changer transitions 0/44 dead transitions. [2023-09-01 06:16:59,009 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 44 transitions, 265 flow [2023-09-01 06:16:59,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 06:16:59,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 06:16:59,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1355 transitions. [2023-09-01 06:16:59,012 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4507651363938789 [2023-09-01 06:16:59,012 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1355 transitions. [2023-09-01 06:16:59,012 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1355 transitions. [2023-09-01 06:16:59,013 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:16:59,013 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1355 transitions. [2023-09-01 06:16:59,015 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 225.83333333333334) internal successors, (1355), 6 states have internal predecessors, (1355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:16:59,035 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 501.0) internal successors, (3507), 7 states have internal predecessors, (3507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:16:59,035 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 501.0) internal successors, (3507), 7 states have internal predecessors, (3507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:16:59,036 INFO L175 Difference]: Start difference. First operand has 54 places, 45 transitions, 202 flow. Second operand 6 states and 1355 transitions. [2023-09-01 06:16:59,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 44 transitions, 265 flow [2023-09-01 06:16:59,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 44 transitions, 237 flow, removed 6 selfloop flow, removed 4 redundant places. [2023-09-01 06:16:59,039 INFO L231 Difference]: Finished difference. Result has 52 places, 40 transitions, 146 flow [2023-09-01 06:16:59,039 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=501, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=146, PETRI_PLACES=52, PETRI_TRANSITIONS=40} [2023-09-01 06:16:59,042 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 12 predicate places. [2023-09-01 06:16:59,042 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 40 transitions, 146 flow [2023-09-01 06:16:59,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 220.16666666666666) internal successors, (1321), 6 states have internal predecessors, (1321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:16:59,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:16:59,043 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:16:59,049 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-09-01 06:16:59,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:16:59,249 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-09-01 06:16:59,249 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:16:59,249 INFO L85 PathProgramCache]: Analyzing trace with hash -1722067788, now seen corresponding path program 1 times [2023-09-01 06:16:59,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:16:59,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890152460] [2023-09-01 06:16:59,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:16:59,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:16:59,293 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-09-01 06:16:59,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [893874316] [2023-09-01 06:16:59,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:16:59,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:16:59,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 06:16:59,302 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 06:16:59,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-09-01 06:16:59,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:16:59,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 1081 conjuncts, 6 conjunts are in the unsatisfiable core [2023-09-01 06:16:59,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 06:16:59,738 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:16:59,738 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 06:16:59,778 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:16:59,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:16:59,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890152460] [2023-09-01 06:16:59,778 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-09-01 06:16:59,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [893874316] [2023-09-01 06:16:59,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [893874316] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 06:16:59,779 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-09-01 06:16:59,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-09-01 06:16:59,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820487654] [2023-09-01 06:16:59,779 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-09-01 06:16:59,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-09-01 06:16:59,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:16:59,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-09-01 06:16:59,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-09-01 06:16:59,930 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 501 [2023-09-01 06:16:59,932 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 40 transitions, 146 flow. Second operand has 12 states, 12 states have (on average 224.58333333333334) internal successors, (2695), 12 states have internal predecessors, (2695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:16:59,933 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:16:59,933 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 501 [2023-09-01 06:16:59,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:17:00,732 INFO L130 PetriNetUnfolder]: 435/724 cut-off events. [2023-09-01 06:17:00,732 INFO L131 PetriNetUnfolder]: For 159/159 co-relation queries the response was YES. [2023-09-01 06:17:00,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1543 conditions, 724 events. 435/724 cut-off events. For 159/159 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2836 event pairs, 340 based on Foata normal form. 12/460 useless extension candidates. Maximal degree in co-relation 1523. Up to 705 conditions per place. [2023-09-01 06:17:00,735 INFO L137 encePairwiseOnDemand]: 498/501 looper letters, 33 selfloop transitions, 13 changer transitions 0/46 dead transitions. [2023-09-01 06:17:00,735 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 46 transitions, 274 flow [2023-09-01 06:17:00,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-09-01 06:17:00,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-09-01 06:17:00,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2725 transitions. [2023-09-01 06:17:00,740 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4532601463739188 [2023-09-01 06:17:00,740 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2725 transitions. [2023-09-01 06:17:00,740 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2725 transitions. [2023-09-01 06:17:00,741 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:17:00,741 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2725 transitions. [2023-09-01 06:17:00,744 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 227.08333333333334) internal successors, (2725), 12 states have internal predecessors, (2725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:17:00,749 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 501.0) internal successors, (6513), 13 states have internal predecessors, (6513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:17:00,750 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 501.0) internal successors, (6513), 13 states have internal predecessors, (6513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:17:00,750 INFO L175 Difference]: Start difference. First operand has 52 places, 40 transitions, 146 flow. Second operand 12 states and 2725 transitions. [2023-09-01 06:17:00,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 46 transitions, 274 flow [2023-09-01 06:17:00,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 46 transitions, 266 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-09-01 06:17:00,752 INFO L231 Difference]: Finished difference. Result has 66 places, 46 transitions, 238 flow [2023-09-01 06:17:00,752 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=501, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=238, PETRI_PLACES=66, PETRI_TRANSITIONS=46} [2023-09-01 06:17:00,753 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 26 predicate places. [2023-09-01 06:17:00,753 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 46 transitions, 238 flow [2023-09-01 06:17:00,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 224.58333333333334) internal successors, (2695), 12 states have internal predecessors, (2695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:17:00,754 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:17:00,754 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:17:00,779 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-09-01 06:17:00,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:17:00,969 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-09-01 06:17:00,969 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:17:00,969 INFO L85 PathProgramCache]: Analyzing trace with hash 1929241780, now seen corresponding path program 2 times [2023-09-01 06:17:00,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:17:00,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285685659] [2023-09-01 06:17:00,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:17:00,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:17:01,050 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-09-01 06:17:01,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1937361066] [2023-09-01 06:17:01,051 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 06:17:01,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:17:01,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 06:17:01,052 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 06:17:01,054 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-09-01 06:17:01,431 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 06:17:01,431 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 06:17:01,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 7 conjunts are in the unsatisfiable core [2023-09-01 06:17:01,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 06:17:01,458 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-09-01 06:17:01,459 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 06:17:01,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:17:01,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285685659] [2023-09-01 06:17:01,459 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-09-01 06:17:01,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1937361066] [2023-09-01 06:17:01,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1937361066] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 06:17:01,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 06:17:01,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 06:17:01,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311330048] [2023-09-01 06:17:01,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 06:17:01,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 06:17:01,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:17:01,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 06:17:01,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 06:17:01,481 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 225 out of 501 [2023-09-01 06:17:01,482 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 46 transitions, 238 flow. Second operand has 3 states, 3 states have (on average 228.33333333333334) internal successors, (685), 3 states have internal predecessors, (685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:17:01,482 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:17:01,482 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 225 of 501 [2023-09-01 06:17:01,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:17:01,635 INFO L130 PetriNetUnfolder]: 398/663 cut-off events. [2023-09-01 06:17:01,635 INFO L131 PetriNetUnfolder]: For 88/88 co-relation queries the response was YES. [2023-09-01 06:17:01,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1469 conditions, 663 events. 398/663 cut-off events. For 88/88 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2867 event pairs, 10 based on Foata normal form. 0/423 useless extension candidates. Maximal degree in co-relation 1444. Up to 597 conditions per place. [2023-09-01 06:17:01,637 INFO L137 encePairwiseOnDemand]: 499/501 looper letters, 59 selfloop transitions, 1 changer transitions 0/60 dead transitions. [2023-09-01 06:17:01,638 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 60 transitions, 388 flow [2023-09-01 06:17:01,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 06:17:01,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 06:17:01,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 723 transitions. [2023-09-01 06:17:01,640 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4810379241516966 [2023-09-01 06:17:01,640 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 723 transitions. [2023-09-01 06:17:01,640 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 723 transitions. [2023-09-01 06:17:01,640 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:17:01,640 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 723 transitions. [2023-09-01 06:17:01,641 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 241.0) internal successors, (723), 3 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:17:01,643 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 501.0) internal successors, (2004), 4 states have internal predecessors, (2004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:17:01,643 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 501.0) internal successors, (2004), 4 states have internal predecessors, (2004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:17:01,643 INFO L175 Difference]: Start difference. First operand has 66 places, 46 transitions, 238 flow. Second operand 3 states and 723 transitions. [2023-09-01 06:17:01,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 60 transitions, 388 flow [2023-09-01 06:17:01,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 60 transitions, 336 flow, removed 19 selfloop flow, removed 5 redundant places. [2023-09-01 06:17:01,646 INFO L231 Difference]: Finished difference. Result has 62 places, 45 transitions, 186 flow [2023-09-01 06:17:01,646 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=501, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=186, PETRI_PLACES=62, PETRI_TRANSITIONS=45} [2023-09-01 06:17:01,648 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 22 predicate places. [2023-09-01 06:17:01,648 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 45 transitions, 186 flow [2023-09-01 06:17:01,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 228.33333333333334) internal successors, (685), 3 states have internal predecessors, (685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:17:01,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:17:01,648 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:17:01,661 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-09-01 06:17:01,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-09-01 06:17:01,857 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-09-01 06:17:01,857 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:17:01,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1929241803, now seen corresponding path program 1 times [2023-09-01 06:17:01,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:17:01,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124776146] [2023-09-01 06:17:01,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:17:01,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:17:01,951 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-09-01 06:17:01,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [413988215] [2023-09-01 06:17:01,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:17:01,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:17:01,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 06:17:01,953 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 06:17:01,955 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-09-01 06:17:02,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 06:17:02,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 2480 conjuncts, 12 conjunts are in the unsatisfiable core [2023-09-01 06:17:02,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 06:17:02,813 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 1 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:17:02,814 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 06:17:02,972 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 1 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:17:02,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:17:02,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124776146] [2023-09-01 06:17:02,973 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-09-01 06:17:02,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [413988215] [2023-09-01 06:17:02,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [413988215] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 06:17:02,973 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-09-01 06:17:02,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2023-09-01 06:17:02,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416913306] [2023-09-01 06:17:02,975 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-09-01 06:17:02,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-09-01 06:17:02,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:17:02,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-09-01 06:17:02,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2023-09-01 06:17:03,132 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 501 [2023-09-01 06:17:03,150 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 45 transitions, 186 flow. Second operand has 24 states, 24 states have (on average 224.29166666666666) internal successors, (5383), 24 states have internal predecessors, (5383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:17:03,152 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:17:03,153 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 501 [2023-09-01 06:17:03,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:17:04,510 INFO L130 PetriNetUnfolder]: 398/687 cut-off events. [2023-09-01 06:17:04,510 INFO L131 PetriNetUnfolder]: For 1220/1220 co-relation queries the response was YES. [2023-09-01 06:17:04,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1541 conditions, 687 events. 398/687 cut-off events. For 1220/1220 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2560 event pairs, 307 based on Foata normal form. 24/471 useless extension candidates. Maximal degree in co-relation 1517. Up to 644 conditions per place. [2023-09-01 06:17:04,513 INFO L137 encePairwiseOnDemand]: 498/501 looper letters, 32 selfloop transitions, 25 changer transitions 0/57 dead transitions. [2023-09-01 06:17:04,513 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 57 transitions, 372 flow [2023-09-01 06:17:04,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-09-01 06:17:04,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-09-01 06:17:04,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 5418 transitions. [2023-09-01 06:17:04,522 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4505988023952096 [2023-09-01 06:17:04,522 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 5418 transitions. [2023-09-01 06:17:04,522 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 5418 transitions. [2023-09-01 06:17:04,524 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:17:04,524 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 5418 transitions. [2023-09-01 06:17:04,540 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 225.75) internal successors, (5418), 24 states have internal predecessors, (5418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:17:04,552 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 501.0) internal successors, (12525), 25 states have internal predecessors, (12525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:17:04,553 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 501.0) internal successors, (12525), 25 states have internal predecessors, (12525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:17:04,553 INFO L175 Difference]: Start difference. First operand has 62 places, 45 transitions, 186 flow. Second operand 24 states and 5418 transitions. [2023-09-01 06:17:04,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 57 transitions, 372 flow [2023-09-01 06:17:04,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 57 transitions, 371 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 06:17:04,555 INFO L231 Difference]: Finished difference. Result has 96 places, 57 transitions, 381 flow [2023-09-01 06:17:04,556 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=501, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=381, PETRI_PLACES=96, PETRI_TRANSITIONS=57} [2023-09-01 06:17:04,556 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 56 predicate places. [2023-09-01 06:17:04,556 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 57 transitions, 381 flow [2023-09-01 06:17:04,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 224.29166666666666) internal successors, (5383), 24 states have internal predecessors, (5383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:17:04,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:17:04,558 INFO L208 CegarLoopForPetriNet]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:17:04,571 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-09-01 06:17:04,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:17:04,768 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-09-01 06:17:04,768 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:17:04,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1228995381, now seen corresponding path program 2 times [2023-09-01 06:17:04,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:17:04,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22819151] [2023-09-01 06:17:04,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:17:04,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:17:04,950 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-09-01 06:17:04,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [449346818] [2023-09-01 06:17:04,950 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 06:17:04,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:17:04,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 06:17:04,951 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 06:17:04,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-09-01 06:17:06,382 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 06:17:06,382 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 06:17:06,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 5288 conjuncts, 24 conjunts are in the unsatisfiable core [2023-09-01 06:17:06,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 06:17:06,655 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 1 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:17:06,656 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 06:17:07,005 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 1 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 06:17:07,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:17:07,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22819151] [2023-09-01 06:17:07,005 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-09-01 06:17:07,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [449346818] [2023-09-01 06:17:07,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [449346818] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 06:17:07,006 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-09-01 06:17:07,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 32 [2023-09-01 06:17:07,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284961663] [2023-09-01 06:17:07,006 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-09-01 06:17:07,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-09-01 06:17:07,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:17:07,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-09-01 06:17:07,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2023-09-01 06:17:07,228 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 501 [2023-09-01 06:17:07,231 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 57 transitions, 381 flow. Second operand has 32 states, 32 states have (on average 224.25) internal successors, (7176), 32 states have internal predecessors, (7176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:17:07,231 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:17:07,231 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 501 [2023-09-01 06:17:07,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:17:08,587 INFO L130 PetriNetUnfolder]: 398/703 cut-off events. [2023-09-01 06:17:08,588 INFO L131 PetriNetUnfolder]: For 4132/4132 co-relation queries the response was YES. [2023-09-01 06:17:08,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1729 conditions, 703 events. 398/703 cut-off events. For 4132/4132 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2560 event pairs, 307 based on Foata normal form. 16/479 useless extension candidates. Maximal degree in co-relation 1692. Up to 644 conditions per place. [2023-09-01 06:17:08,591 INFO L137 encePairwiseOnDemand]: 498/501 looper letters, 32 selfloop transitions, 33 changer transitions 0/65 dead transitions. [2023-09-01 06:17:08,591 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 65 transitions, 575 flow [2023-09-01 06:17:08,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-09-01 06:17:08,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-09-01 06:17:08,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 7206 transitions. [2023-09-01 06:17:08,602 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4494760479041916 [2023-09-01 06:17:08,603 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 7206 transitions. [2023-09-01 06:17:08,603 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 7206 transitions. [2023-09-01 06:17:08,605 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:17:08,605 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 7206 transitions. [2023-09-01 06:17:08,615 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 225.1875) internal successors, (7206), 32 states have internal predecessors, (7206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:17:08,628 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 501.0) internal successors, (16533), 33 states have internal predecessors, (16533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:17:08,630 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 501.0) internal successors, (16533), 33 states have internal predecessors, (16533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:17:08,630 INFO L175 Difference]: Start difference. First operand has 96 places, 57 transitions, 381 flow. Second operand 32 states and 7206 transitions. [2023-09-01 06:17:08,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 65 transitions, 575 flow [2023-09-01 06:17:08,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 65 transitions, 459 flow, removed 45 selfloop flow, removed 11 redundant places. [2023-09-01 06:17:08,636 INFO L231 Difference]: Finished difference. Result has 124 places, 65 transitions, 445 flow [2023-09-01 06:17:08,637 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=501, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=445, PETRI_PLACES=124, PETRI_TRANSITIONS=65} [2023-09-01 06:17:08,637 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 84 predicate places. [2023-09-01 06:17:08,638 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 65 transitions, 445 flow [2023-09-01 06:17:08,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 224.25) internal successors, (7176), 32 states have internal predecessors, (7176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:17:08,639 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:17:08,639 INFO L208 CegarLoopForPetriNet]: trace histogram [30, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:17:08,657 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-09-01 06:17:08,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-09-01 06:17:08,849 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-09-01 06:17:08,849 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:17:08,849 INFO L85 PathProgramCache]: Analyzing trace with hash -716192565, now seen corresponding path program 3 times [2023-09-01 06:17:08,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:17:08,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18255145] [2023-09-01 06:17:08,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:17:08,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:17:09,087 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-09-01 06:17:09,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1281340355] [2023-09-01 06:17:09,087 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-01 06:17:09,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:17:09,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 06:17:09,088 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 06:17:09,108 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-09-01 06:17:10,185 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-09-01 06:17:10,185 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 06:17:10,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 3 conjunts are in the unsatisfiable core [2023-09-01 06:17:10,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 06:17:10,296 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 465 trivial. 0 not checked. [2023-09-01 06:17:10,297 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 06:17:10,412 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 465 trivial. 0 not checked. [2023-09-01 06:17:10,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:17:10,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18255145] [2023-09-01 06:17:10,413 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-09-01 06:17:10,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1281340355] [2023-09-01 06:17:10,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1281340355] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 06:17:10,413 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-09-01 06:17:10,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-09-01 06:17:10,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760242003] [2023-09-01 06:17:10,414 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-09-01 06:17:10,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 06:17:10,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:17:10,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 06:17:10,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-09-01 06:17:10,464 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 501 [2023-09-01 06:17:10,465 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 65 transitions, 445 flow. Second operand has 6 states, 6 states have (on average 225.5) internal successors, (1353), 6 states have internal predecessors, (1353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:17:10,466 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:17:10,466 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 501 [2023-09-01 06:17:10,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:17:10,819 INFO L130 PetriNetUnfolder]: 400/770 cut-off events. [2023-09-01 06:17:10,819 INFO L131 PetriNetUnfolder]: For 1655/1655 co-relation queries the response was YES. [2023-09-01 06:17:10,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2088 conditions, 770 events. 400/770 cut-off events. For 1655/1655 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2435 event pairs, 307 based on Foata normal form. 3/533 useless extension candidates. Maximal degree in co-relation 2043. Up to 638 conditions per place. [2023-09-01 06:17:10,822 INFO L137 encePairwiseOnDemand]: 497/501 looper letters, 156 selfloop transitions, 6 changer transitions 0/162 dead transitions. [2023-09-01 06:17:10,822 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 162 transitions, 1584 flow [2023-09-01 06:17:10,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 06:17:10,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 06:17:10,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1383 transitions. [2023-09-01 06:17:10,825 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4600798403193613 [2023-09-01 06:17:10,825 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1383 transitions. [2023-09-01 06:17:10,825 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1383 transitions. [2023-09-01 06:17:10,826 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:17:10,826 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1383 transitions. [2023-09-01 06:17:10,828 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 230.5) internal successors, (1383), 6 states have internal predecessors, (1383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:17:10,830 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 501.0) internal successors, (3507), 7 states have internal predecessors, (3507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:17:10,831 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 501.0) internal successors, (3507), 7 states have internal predecessors, (3507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:17:10,831 INFO L175 Difference]: Start difference. First operand has 124 places, 65 transitions, 445 flow. Second operand 6 states and 1383 transitions. [2023-09-01 06:17:10,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 162 transitions, 1584 flow [2023-09-01 06:17:10,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 162 transitions, 1198 flow, removed 100 selfloop flow, removed 23 redundant places. [2023-09-01 06:17:10,838 INFO L231 Difference]: Finished difference. Result has 110 places, 68 transitions, 511 flow [2023-09-01 06:17:10,838 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=501, PETRI_DIFFERENCE_MINUEND_FLOW=345, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=511, PETRI_PLACES=110, PETRI_TRANSITIONS=68} [2023-09-01 06:17:10,838 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 70 predicate places. [2023-09-01 06:17:10,838 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 68 transitions, 511 flow [2023-09-01 06:17:10,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 225.5) internal successors, (1353), 6 states have internal predecessors, (1353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:17:10,839 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:17:10,839 INFO L208 CegarLoopForPetriNet]: trace histogram [120, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:17:10,849 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-09-01 06:17:11,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-09-01 06:17:11,048 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-09-01 06:17:11,048 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:17:11,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1327930031, now seen corresponding path program 4 times [2023-09-01 06:17:11,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:17:11,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311851496] [2023-09-01 06:17:11,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:17:11,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:17:12,138 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-09-01 06:17:12,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [20773315] [2023-09-01 06:17:12,138 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-09-01 06:17:12,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:17:12,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 06:17:12,140 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 06:17:12,153 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-09-01 06:17:18,277 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-09-01 06:17:18,277 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 06:17:18,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 28340 conjuncts, 6 conjunts are in the unsatisfiable core [2023-09-01 06:17:18,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 06:17:18,689 INFO L134 CoverageAnalysis]: Checked inductivity of 7636 backedges. 0 proven. 5776 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2023-09-01 06:17:18,690 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 06:17:18,922 INFO L134 CoverageAnalysis]: Checked inductivity of 7636 backedges. 0 proven. 5776 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2023-09-01 06:17:18,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 06:17:18,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311851496] [2023-09-01 06:17:18,922 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-09-01 06:17:18,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [20773315] [2023-09-01 06:17:18,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [20773315] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 06:17:18,922 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-09-01 06:17:18,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-09-01 06:17:18,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981674711] [2023-09-01 06:17:18,923 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-09-01 06:17:18,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-09-01 06:17:18,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 06:17:18,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-09-01 06:17:18,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-09-01 06:17:19,062 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 501 [2023-09-01 06:17:19,064 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 68 transitions, 511 flow. Second operand has 12 states, 12 states have (on average 225.75) internal successors, (2709), 12 states have internal predecessors, (2709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:17:19,064 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 06:17:19,064 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 501 [2023-09-01 06:17:19,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 06:17:20,029 INFO L130 PetriNetUnfolder]: 406/968 cut-off events. [2023-09-01 06:17:20,030 INFO L131 PetriNetUnfolder]: For 5331/5331 co-relation queries the response was YES. [2023-09-01 06:17:20,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2737 conditions, 968 events. 406/968 cut-off events. For 5331/5331 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2441 event pairs, 307 based on Foata normal form. 6/734 useless extension candidates. Maximal degree in co-relation 2688. Up to 638 conditions per place. [2023-09-01 06:17:20,034 INFO L137 encePairwiseOnDemand]: 497/501 looper letters, 348 selfloop transitions, 12 changer transitions 0/360 dead transitions. [2023-09-01 06:17:20,034 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 360 transitions, 2876 flow [2023-09-01 06:17:20,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-09-01 06:17:20,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-09-01 06:17:20,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2742 transitions. [2023-09-01 06:17:20,038 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4560878243512974 [2023-09-01 06:17:20,038 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2742 transitions. [2023-09-01 06:17:20,038 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2742 transitions. [2023-09-01 06:17:20,039 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 06:17:20,039 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2742 transitions. [2023-09-01 06:17:20,041 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 228.5) internal successors, (2742), 12 states have internal predecessors, (2742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:17:20,046 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 501.0) internal successors, (6513), 13 states have internal predecessors, (6513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:17:20,047 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 501.0) internal successors, (6513), 13 states have internal predecessors, (6513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:17:20,047 INFO L175 Difference]: Start difference. First operand has 110 places, 68 transitions, 511 flow. Second operand 12 states and 2742 transitions. [2023-09-01 06:17:20,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 360 transitions, 2876 flow [2023-09-01 06:17:20,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 360 transitions, 2874 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 06:17:20,057 INFO L231 Difference]: Finished difference. Result has 127 places, 75 transitions, 983 flow [2023-09-01 06:17:20,057 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=501, PETRI_DIFFERENCE_MINUEND_FLOW=509, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=983, PETRI_PLACES=127, PETRI_TRANSITIONS=75} [2023-09-01 06:17:20,057 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 87 predicate places. [2023-09-01 06:17:20,058 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 75 transitions, 983 flow [2023-09-01 06:17:20,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 225.75) internal successors, (2709), 12 states have internal predecessors, (2709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 06:17:20,058 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:17:20,058 INFO L208 CegarLoopForPetriNet]: trace histogram [300, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:17:20,124 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-09-01 06:17:20,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-09-01 06:17:20,281 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-09-01 06:17:20,281 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:17:20,281 INFO L85 PathProgramCache]: Analyzing trace with hash 190789239, now seen corresponding path program 5 times [2023-09-01 06:17:20,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:17:20,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354117654] [2023-09-01 06:17:20,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:17:20,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:17:22,638 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-09-01 06:17:22,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [617813114] [2023-09-01 06:17:22,638 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-09-01 06:17:22,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 06:17:22,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 06:17:22,641 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 06:17:22,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process Killed by 15